Famous Patents
British merchant Peter Durand invented the tin can in 1810.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7896029 | Four-way valve In a four-way valve having a simple structure, even if a high-temperature refrigerant and a low-temperature refrigerant flow close to each other, heat loss between both refrigerants is suppressed. The valve comprises a housing member including a valve chamber, a val... | 03/01/2011 |
| 7631661 | Straight flow reversing valve Provided is a reversing valve that can reverse flow in a refrigeration system. The reversing valve includes a valve body extending between a first end and an opposing second end. Multiple ports are disposed through the first and second ends. In one aspect, to reduce... | 12/15/2009 |
| 7600535 | Valve unit for pressure exchanger installations A valve for switching over liquid paths, particularly for pressure exchanger installations with tubular pressure exchanger chambers (3) through which an alternating flow occurs, in which a rotatable control element (10, 10.1) having a plurality of flow... | 10/13/2009 |
| 7434653 | On-demand electro-hydraulic steering system A hydraulic steering system for a work machine may include a first steering actuator having a first and a second chamber. In addition, the steering system may include a second steering actuator having a third and a fourth chamber. A multi-position directional valve ... | 10/14/2008 |
| 7431049 | Valve for withdrawal of a substance from a container A valve has a housing defining a bore. Two bottom ports and two side ports in the housing communicate with the bore. Two annular grooves are in the outer surface of a spool received in the bore. A bypass extends within the spool from an annular groove to a bypass po... | 10/07/2008 |
| 7367358 | Medical fluid delivery system and method relating to the same A medical fluid delivery system for the use in the delivery of medical fluids. The medical fluid delivery system may include a pumping system, a disposable medical fluid line set and a valve operating system. The disposable tubing line set may include valves adapted... | 05/06/2008 |
| 7302811 | Fluid expansion-distribution assembly An expansion-distribution assembly (30) for the heat-absorbing component in a heatpump system. The assembly (30) comprises an envelope (32) forming an expansion chamber (54) and a distribution chamber (56). A shuttle (80) wi... | 12/04/2007 |
| 7296756 | Voltage block A voltage block comprises first and second reservoirs and a switching device including an inlet port, an outlet port, a first reservoir port and a second reservoir port. The switching device is mounted in a third reservoir for movement between a first position and a... | 11/20/2007 |
| 7280019 | Single coil solenoid having a permanent magnet with bi-directional assist A single coil solenoid includes a permanent magnet with bidirectional assist capabilities. The solenoid includes an armature that during de-energization of a single coil of wire is attracted to the permanent magnet thereby maintaining a hold position and during ener... | 10/09/2007 |
| 7260943 | Apparatus and method for servicing a coolant system An apparatus, system and method for servicing a coolant system, such as, an automobile air conditioner are disclosed. In one embodiment, the apparatus may comprise a device for measuring a parameter of the coolant system; and means for selectively switching between ... | 08/28/2007 |
| 7255129 | Valve with elbow joint diverter A multiport diverter valve comprising a valve housing defining a valving chamber therein. A plurality of ports open into the chamber. A flow diverter is pivotally mounted in the chamber and has a concave diverter surface forming a portion of a torus. First and secon... | 08/14/2007 |
| 7182746 | Reversible lumen catheter A catheter is provided including a tubular body having a proximal end and a distal end. The body includes a first lumen and a second lumen with a septum disposed therebetween. The proximal end includes a valve and a hub that are integral with the body. The hub inclu... | 02/27/2007 |
| 7156322 | Irrigation sprinkler unit with cycling flow rate An irrigation sprinkler unit includes a tubular housing enclosing a speed reducing drive which is driven by a water actuated turbine wheel and rotates a rotary nozzle head at a substantially slower speed. The drive also rotates a tubular valve member within an annul... | 01/02/2007 |
| 7140595 | Pressure regulator with single strut regulator seat A fluid pressure regulator comprising a tubular housing having a fluid inlet at one end thereof and a fluid outlet at an opposite end and a fluid passage therebetween; a tubular plunger mounted for reciprocal movement in the fluid passage, the plunger having a flow ... | 11/28/2006 |
| 7124777 | Reversing valve with flowsplitter Provided is a reversing valve for reversing flow in a refrigeration system. The reversing valve includes a valve body having first, second, third, and fourth ports disposed into the valve body. A valve member inside the valve body can be selectively moved between a ... | 10/24/2006 |
| 7117882 | Valve for changing the direction of flow of a fluid in pipe conduits A valve and use of a valve. The valve changes the direction of flow of a fluid in pipings conducting the fluid to and from a heat exchanger. A cylindrical casing and a valve body enclosed therein can be rotated between two positions. The valve body has three flow pa... | 10/10/2006 |
| 7083159 | Precision flow-control device using multiple shutters This invention relates to a shutter device for the precision control of a flow, comprising at least one organ for shutting a section for the passage of a flow, the motion of which is proportional to that of an actuator controlling it, wherein said device comprises a... | 08/01/2006 |
| 7069949 | Four-way switching valve The object of the present invention is to provide a simple-construction four-way switching valve which is simple in construction and excellent in sealability, performs switching of the operation mode without producing unusual noise, and is reduced in the number of m... | 07/04/2006 |
| 7055799 | Electromagnetic apparatus for automatically and selectively supplying and shutting off fluid Disclosed herein is an electromagnetic apparatus for automatically and selectively supplying and shutting off fluid. The electromagnetic apparatus includes a frame unit, a through unit, a coil unit, a rotor, a casing, a shaft and a casing. The frame unit is coaxiall... | 06/06/2006 |
| 7036521 | Air conserving slide valve A slide type valve (V) for regulating a gas generating system (10) that has at least a first and a second gas concentrating bed unit (12, 14) includes an outer body (120) with a slide face (106) having at least three open ports (130, 1... | 05/02/2006 |
| 7000636 | Valve assemblies for use with a reactive precursor in semiconductor processing The invention includes chemical vapor deposition methods, including atomic layer deposition, and valve assemblies for use with a reactive precursor in semiconductor processing. In one implementation, a chemical vapor deposition method includes positioning a semicond... | 02/21/2006 |
| 6976500 | Valve combination for a fluid circuit with two pressure levels, particularly a combined cooling system/heat pump circuit The invention relates to a valve combination which is characterized in that the valve combination has a passive valve and an active valve. The active valve is provided with means for an active influence of the control position of a closing element and regulates the ... | 12/20/2005 |
| 6959730 | Single valve fuel cell stack gas flow and containment A vane (31) at the juncture of orthogonal conduits (25–28) allows flow of air to and from the air inlet/outlet manifold (12) of a fuel cell stack (11) when it is disposed in a first position, and totally blocks the conduits (25, 26 | 11/01/2005 |
| 6935372 | Semiconductor processing reactive precursor valve assembly The invention includes chemical vapor deposition methods, including atomic layer deposition, and valve assemblies for use with a reactive precursor in semiconductor processing. In one implementation, a chemical vapor deposition method includes positioning a semicond... | 08/30/2005 |
| 6878293 | Automatic valve assembly for water circulation systems A filtration and backwash system for a water source such as a swimming pool is provided including a fluid source, a pump, a filter and a specially designed five-port valve which is easily adaptable for automatic use in the filtration mode and in the backwash mode. T... | 04/12/2005 |
| 6860294 | Four-way switching valve To provide a four-way solenoid valve having a three-way solenoid valve of which non-concentricity between a valve element and a valve hole is small, if any. A core of a three-way solenoid is integrally formed with a refrigerant passage extending axially therethrough... | 03/01/2005 |
| 6830073 | Four-way reversing valve A four-way reversing valve includes a valve casing having a plurality of ports through which fluid flows, a valve main body fixedly installed to the valve casing and having a valve chamber in which a plurality of main port connection holes for selectively connecting... | 12/14/2004 |
| 6823897 | Four-way switching valve A four-way switching valve free from leakage of a refrigerant is disclosed. The valve includes two three-way switching valves arranged side by side, each having a pressure-regulating chamber, a piston, and a plug coaxially arranged. One of the pressure-regulating ch... | 11/30/2004 |
| 6810911 | Four-way switching valve A four-way switching valve includes a first three-way switching valve having a valve element for connecting a port B to a port A, or to a port D via a sleeve, in a switching manner; a second three-way switching valve having a valve element for connecting a port C to... | 11/02/2004 |
| 6743193 | Hermetic flow selector valve A flow diverting appliance has a flexible valve body to which a number of flow lines are connected. The valve body is deformed to create different flow paths within it. The valve body may be deformed, for example, by pinching it to define press-seals in an enclosed ... | 06/01/2004 |
| 6698452 | Cycle reversing valve for use in heat pumps A four port reversing valve for a reversible-cycle refrigeration system having a compressor is constructed with the reversing valve having a first inlet port adapted to be connected to the compressor and second, third, and fourth ports. The four port reve... | 03/02/2004 |
| 6684651 | Channel selector valve and method of driving the same, compressor with the channel selector valve, and device for controlling refrigerating cycle Upon a selector operation of a valve such as a four-way selector valve provided in a refrigerating cycle for selecting a channel of fluid, prevention of environmental pollution and energy saving and the like are effectively achieved. A sliding valve is co... | 02/03/2004 |
| 6505647 | Four-way selector valve The four-way selector valve relating to the invention basically comprises a motor which has a stator and a rotor, a case, and a main body including a main valve and a valve seat, both of which are arranged in a valve chest within the case. The valve seat ... | 01/14/2003 |
| 6491063 | Valve assembly and airconditioning system including same A valve assembly for controlling the flow of a fluid between a plurality of ports including at least one high pressure port and one low pressure port, includes: a base mounting the plurality of ports; and a valve member rotatable to a selected operational... | 12/10/2002 |
| 6295828 | Apparatus for switching a refrigerant channel of an air conditioner having cooling and warming functions A refrigerant channel switching apparatus in an air conditioner having cooling and warming functions is provided. The apparatus includes a main valve body, a direction shifting chamber formed within the main valve body and having a four connecting ports c... | 10/02/2001 |
| 6289931 | Cycle reversing valve for use in heat pumps A four port reversing valve for a reversible-cycle refrigeration system having a compressor is constructed with the reversing valve having a first inlet port adapted to be connected to the compressor and second, third, and fourth ports. The four port reve... | 09/18/2001 |
| 6247497 | Rotary channel-selector valve A rotary channel-selector valve is provided, which includes: a valve-seat plate covering one end of a cylindrical valve housing and provided with low and high pressure ports and two switching ports all connecting the inside and the outside of the valve; a... | 06/19/2001 |
| 6244298 | Channel-switching valve and method of controlling the same, and refrigerating cycle and method of controlling the same A channel-switching valve is provided. The channel-switching valve comprises: a cylindrical valve housing whose one end is closed by a main valve seat; a low pressure outlet and two connecting holes for connecting the inside and the outside of the valve h... | 06/12/2001 |
| 6234207 | Device for changing flow of operating medium in air conditioning system A device for changing the flow of an operating medium in an air conditioning system, comprises a casing including a first port connected to an outlet or inlet port of a compressor, a second port connected to an indoor heat exchanger, a third port connecte... | 05/22/2001 |
| 6230743 | Channel-switching valve and method of controlling the same, and refrigerating cycle and method of controlling the same A channel-switching valve is provided. The channel-switching valve comprises: a cylindrical valve housing whose one end is closed by a main valve seat; a low pressure outlet and two connecting holes for connecting the inside and the outside of the valve h... | 05/15/2001 |
